Patch 6.2.0 (23-Jun-2015): Serpent Sting no longer deals an initial "tick" of damage when the periodic effect is first applied.

Patch 6.0.2 (14-October-2014): Serpent Sting has been redesigned based on Serpent Spread and is now available only to Survival Hunters.; Serpent Sting now causes Multi-Shot and Arcane Shot to also apply a Serpent Sting poison dealing instant and periodic damage.

Patch 2.3.0 (13-Nov-2007): Now scales with ranged attack power instead of spell damage. It was considered to be a nature-spell-damage based attack thus was buffed by all nature and general spell-damage buffs including and not limited to: Wizard oil, Improved divine spirit, Wrath of Air Totem. This is no longer the case.